Reported morphology
Ring / torus
Annular forms and luminous rings whose centre appears open or less bright.

Overview
Ring-like UAP reports are comparatively sparse in the current archive. Some may describe structured annular objects, while others can arise from defocus, diffraction, atmospheric effects or the rendering of a bright source.
Observation and identification
A dark centre in an image does not by itself establish a hollow object. Original files, focus information and the behaviour of known point sources recorded by the same system are particularly important.
The earliest wording, sketches and recordings carry greater evidential weight than later labels or illustrations.
Selected reports
These sources preserve the relevant shape description. Their provenance and limitations are noted in each summary.
A Cheshire entry dated 9 January states that an object eclipsing the Moon was ring-shaped. The brief record preserves the morphology term but does not establish distance, source identity or a toroidal body.
Open record UK Ministry of Defence UFO Report 2001The log records a circular object with a ring at Whitchurch on 28 February, nested rings at Humberside on 20 May, a horizontal ring with a tail at Buxton on 14 August and a circle within a circle at Abbotskerswell on 17 August. The entries do not establish physical annular objects.
Open recordNotable cases
The reported form is material to these cases; the links do not imply a common object or cause.
No existing UAPRAD case currently documents this form strongly enough to be assigned as a notable example.
Comparison cases
These cases bear on perception, geometry or sensor interpretation but are not classified as examples of this form.
Public record
These pages document the institutional and historical record associated with the reports.
No dedicated UAPRAD public-record page has yet been assigned to this form. Relevant records will be added only where the morphology is material to the source.
Key witnesses
Each dossier separates direct observation from later recollection and interpretation.
No witness deep dive is currently assigned specifically to this form. Witnesses from comparison cases are not relabelled as morphology witnesses.
Evidence assessment
No current UAPRAD case establishes a ring or torus as a resolved physical form. Until a source preserves adequate geometry and provenance, annular appearance is better treated as an observation to test than as a class of object.
Source library
Sources are grouped by evidential role. A tier records provenance and directness; it does not determine whether a reported interpretation is correct.
Tier 2 Official and institutional records
- UK Ministry of Defence UFO Report 2000 — Contains a Cheshire report dated 9 January using ring-shaped language; the intake record does not establish a toroidal body.
- UK Ministry of Defence UFO Report 2001 — Contains four dated ring or nested-circle descriptions; the entries lack the geometry and provenance needed for physical classification.


